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Finding the Fourth Proportional to 20,695,998.40, 28,936,606.40 and 20,695,998.40

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Solution

The fourth proportional to 20,695,998.40, 28,936,606.40 and 20,695,998.40 is: 28,936,606.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695,998.40 : 28,936,606.40 = 20,695,998.40 : x
  2. Step 2: Convert to fraction form
    20,695,998.40/28,936,606.40 = 20,695,998.40/x
  3. Step 3: Cross multiply
    20,695,998.40x = 28,936,606.40 × 20,695,998.40
  4. Step 4: Simplify right side
    20,695,998.40x = 598,871,959,755,829.62
  5. Step 5: Solve for x
    x = 598,871,959,755,829.62/20,695,998.40
  6. Step 6: Final answer
    x = 28,936,606.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.